Microbial Life in Earth's Crust

Microbial Life in Earth's Crust

Assessment

Interactive Video

Biology, Science

9th - 12th Grade

Hard

Created by

Emma Peterson

FREE Resource

The video explores the vast and largely unknown world of subsurface microbes, which are abundant in Earth's crust. These microbes, though slow and dormant, play a crucial role in Earth's ecosystems. The video discusses their potential impact on climate change, carbon storage, and the evolution of life. It highlights research conducted in Costa Rica's volcanoes, revealing how these microbes convert carbon dioxide into minerals, potentially offering solutions to surface-level carbon issues. The study of these microbes could lead to significant breakthroughs in understanding life on Earth and beyond.

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the estimated weight of the gut microbiomes of all people and animals on Earth?

10,000 tons

1 million tons

100,000 tons

2 billion tons

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How deep have microbes been found within the Earth's crust?

1 kilometer

3 kilometers

5 kilometers

10 kilometers

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What analogy is used to explain the dormancy of deep subsurface microbes?

A tree in winter

A sleeping bear

A hibernating frog

A dormant volcano

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is a chemolithoautotroph?

A microbe that uses sunlight to make food

A microbe that uses chemicals from rocks to make food

A microbe that feeds on other microbes

A microbe that lives in water

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What waste product do chemolithoautotrophs often produce?

Minerals like rust or pyrite

Carbon dioxide

Methane

Oxygen

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What natural feature in Costa Rica was studied to understand subsurface microbial activity?

Rainforests

Volcanoes

Beaches

Mountains

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What was the hypothesis about carbon dioxide in Costa Rican hot springs?

It was being released into the atmosphere

It was being filtered out by something underground

It was dissolving in water

It was causing volcanic eruptions

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